Qmax Test Equipments Pvt Ltd. Manufactures Audio Analysers with Variable Antialiasing and Anti-Imaging Filters. Qmax Test Equipments Pvt Ltd. Is ISO 9001 certified company and its marketing and customer support operations are ISO 9002 certified. The Audio Analysers with Variable Antialiasing and Anti-Imaging Filters are available as `PXI-4461 Audio Analysers`. It consists of two simultaneously updated analog outputs at up to 204.8 kS/s. These Audio Analysers are Software-configurable AC/DC coupling and IEPE conditioning. It consists of 24-bit resolution ADCs and DACs with 118 dB dynamic range. This audio analyzer possesses six gain settings for input ranges from ± 316 mV to 42.4 V along with two simultaneously sampled analog inputs at up to 204.8 kS/s.